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Merged
CritasWang merged 1 commit into from
May 29, 2025
Merged

Modify multi device downsampling alignment query #763

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24 changes: 12 additions & 12 deletions src/UserGuide/Master/Table/Basic-Concept/Query-Data.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -327,26 +327,26 @@ IoTDB> SELECT date_bin_gapfill(1s, TIME) AS b_time,
**Example: Aligning multiple sequences by integer time:**

```SQL
IoTDB> SELECT A.a_time AS TIME,
IoTDB> SELECT time,
a_value,
b_value
FROM
(SELECT date_bin_gapfill(1s, TIME) AS a_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(temperature) AS a_value
FROM table1
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) A
JOIN
(SELECT date_bin_gapfill(1s, TIME) AS b_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(humidity) AS b_value
FROM table2
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) B
ON A.a_time=B.b_time
USING (time)
```

**Result:**
Expand All @@ -369,26 +369,26 @@ IoTDB> SELECT A.a_time AS TIME,
**Example:**

```SQL
IoTDB> SELECT A.a_time AS TIME,
IoTDB> SELECT time,
a_value,
b_value
FROM
(SELECT date_bin_gapfill(1s, TIME) AS a_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(temperature) AS a_value
FROM table1
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1) A
JOIN
(SELECT date_bin_gapfill(1s, TIME) AS b_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(humidity) AS b_value
FROM table2
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1) B
ON A.a_time=B.b_time
USING (time)
```

**Result:**
Expand Down Expand Up @@ -487,26 +487,26 @@ IoTDB> SELECT date_bin_gapfill(1s, TIME) AS c_time,
**Example: Aligning multiple sequences by the higher sampling frequency:**

```SQL
IoTDB> SELECT A.a_time AS TIME,
IoTDB> SELECT time,
a_value,
c_value
FROM
(SELECT date_bin_gapfill(1s, TIME) AS a_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(temperature) AS a_value
FROM table1
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) A
JOIN
(SELECT date_bin_gapfill(1s, TIME) AS c_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(humidity) AS c_value
FROM table3
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) C
ON A.a_time=C.c_time
USING (time)
```

**Result:**
Expand Down
25 changes: 13 additions & 12 deletions src/UserGuide/latest-Table/Basic-Concept/Query-Data.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -139,6 +139,7 @@ IoTDB> SELECT time, temperature, humidity
Total line number = 7
It costs 0.106s
```

**Example 3:Multi device time aligned query**

```SQL
Expand Down Expand Up @@ -326,26 +327,26 @@ IoTDB> SELECT date_bin_gapfill(1s, TIME) AS b_time,
**Example: Aligning multiple sequences by integer time:**

```SQL
IoTDB> SELECT A.a_time AS TIME,
IoTDB> SELECT time,
a_value,
b_value
FROM
(SELECT date_bin_gapfill(1s, TIME) AS a_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(temperature) AS a_value
FROM table1
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) A
JOIN
(SELECT date_bin_gapfill(1s, TIME) AS b_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(humidity) AS b_value
FROM table2
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) B
ON A.a_time=B.b_time
USING (time)
```

**Result:**
Expand All @@ -368,26 +369,26 @@ IoTDB> SELECT A.a_time AS TIME,
**Example:**

```SQL
IoTDB> SELECT A.a_time AS TIME,
IoTDB> SELECT time,
a_value,
b_value
FROM
(SELECT date_bin_gapfill(1s, TIME) AS a_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(temperature) AS a_value
FROM table1
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1) A
JOIN
(SELECT date_bin_gapfill(1s, TIME) AS b_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(humidity) AS b_value
FROM table2
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1) B
ON A.a_time=B.b_time
USING (time)
```

**Result:**
Expand Down Expand Up @@ -486,26 +487,26 @@ IoTDB> SELECT date_bin_gapfill(1s, TIME) AS c_time,
**Example: Aligning multiple sequences by the higher sampling frequency:**

```SQL
IoTDB> SELECT A.a_time AS TIME,
IoTDB> SELECT time,
a_value,
c_value
FROM
(SELECT date_bin_gapfill(1s, TIME) AS a_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(temperature) AS a_value
FROM table1
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) A
JOIN
(SELECT date_bin_gapfill(1s, TIME) AS c_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(humidity) AS c_value
FROM table3
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) C
ON A.a_time=C.c_time
USING (time)
```

**Result:**
Expand Down
24 changes: 12 additions & 12 deletions src/zh/UserGuide/Master/Table/Basic-Concept/Query-Data.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -329,26 +329,26 @@ IoTDB> SELECT date_bin_gapfill(1s, TIME) AS b_time,
**示例：按整点将多个序列进行时间对齐：**

```SQL
IoTDB> SELECT A.a_time AS TIME,
IoTDB> SELECT time,
a_value,
b_value
FROM
(SELECT date_bin_gapfill(1s, TIME) AS a_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(temperature) AS a_value
FROM table1
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) A
JOIN
(SELECT date_bin_gapfill(1s, TIME) AS b_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(humidity) AS b_value
FROM table2
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) B
ON A.a_time=B.b_time
USING (time)
```

**结果:**
Expand All @@ -371,26 +371,26 @@ IoTDB> SELECT A.a_time AS TIME,
**示例：**

```SQL
IoTDB> SELECT A.a_time AS TIME,
IoTDB> SELECT time,
a_value,
b_value
FROM
(SELECT date_bin_gapfill(1s, TIME) AS a_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(temperature) AS a_value
FROM table1
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1) A
JOIN
(SELECT date_bin_gapfill(1s, TIME) AS b_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(humidity) AS b_value
FROM table2
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1) B
ON A.a_time=B.b_time
USING (time)
```

**结果:**
Expand Down Expand Up @@ -489,26 +489,26 @@ IoTDB> SELECT date_bin_gapfill(1s, TIME) AS c_time,
**示例：按照高采样频率进行对齐：**

```SQL
IoTDB> SELECT A.a_time AS TIME,
IoTDB> SELECT time,
a_value,
c_value
FROM
(SELECT date_bin_gapfill(1s, TIME) AS a_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(temperature) AS a_value
FROM table1
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) A
JOIN
(SELECT date_bin_gapfill(1s, TIME) AS c_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(humidity) AS c_value
FROM table3
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) C
ON A.a_time=C.c_time
USING (time)
```

**结果：**
Expand Down
24 changes: 12 additions & 12 deletions src/zh/UserGuide/latest-Table/Basic-Concept/Query-Data.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -329,26 +329,26 @@ IoTDB> SELECT date_bin_gapfill(1s, TIME) AS b_time,
**示例：按整点将多个序列进行时间对齐：**

```SQL
IoTDB> SELECT A.a_time AS TIME,
IoTDB> SELECT time,
a_value,
b_value
FROM
(SELECT date_bin_gapfill(1s, TIME) AS a_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(temperature) AS a_value
FROM table1
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) A
JOIN
(SELECT date_bin_gapfill(1s, TIME) AS b_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(humidity) AS b_value
FROM table2
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) B
ON A.a_time=B.b_time
USING (time)
```

**结果:**
Expand All @@ -371,26 +371,26 @@ IoTDB> SELECT A.a_time AS TIME,
**示例：**

```SQL
IoTDB> SELECT A.a_time AS TIME,
IoTDB> SELECT time,
a_value,
b_value
FROM
(SELECT date_bin_gapfill(1s, TIME) AS a_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(temperature) AS a_value
FROM table1
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1) A
JOIN
(SELECT date_bin_gapfill(1s, TIME) AS b_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(humidity) AS b_value
FROM table2
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1) B
ON A.a_time=B.b_time
USING (time)
```

**结果:**
Expand Down Expand Up @@ -489,26 +489,26 @@ IoTDB> SELECT date_bin_gapfill(1s, TIME) AS c_time,
**示例：按照高采样频率进行对齐：**

```SQL
IoTDB> SELECT A.a_time AS TIME,
IoTDB> SELECT time,
a_value,
c_value
FROM
(SELECT date_bin_gapfill(1s, TIME) AS a_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(temperature) AS a_value
FROM table1
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) A
JOIN
(SELECT date_bin_gapfill(1s, TIME) AS c_time,
(SELECT date_bin_gapfill(1s, TIME) AS time,
first(humidity) AS c_value
FROM table3
WHERE device_id = 'd1'
AND TIME >= 2025-05-13 00:00:00.000
AND TIME <= 2025-05-13 00:00:07.000
GROUP BY 1 FILL METHOD PREVIOUS) C
ON A.a_time=C.c_time
USING (time)
```

**结果：**
Expand Down